Parker, a black Republican, has called on the Arizona Democratic Party and his opponent, state Sen. Krysten Sinema, to immediately renounce the attack sent out in a flyer. But the request has been refused, according to 3TV in Phoenix.

The flyer slams Parker's healthcare and tax plans and suggests that he has "questionable ethics." It features a digitally manipulated photograph of Parker that he says is "racially insensitive."

Frank Camacho, the communications director for the state Democratic Party, refused to apologize, claiming the picture used in the flyer came from Parker's Facebook page.

"The picture is such a small part of the mailer that if Mr. Parker is offended then he's offended," Camacho told the television station.”

Camacho added that Parker was “trying to deflect attention away from the issues and trying to spotlight it on what is really an inconsequential matter.”

Parker has alleged racism before. During a primary campaign for Congress two years ago, he called out fellow Republican Ben Quayle for telling voters that Parker would become "the national poster boy for the Democratic Party if elected."